Device for use in the manufacture of ornamental fabrics



June .26, 1934.

A. TIESLER 1,964,607 DEVICE FOR USE IN THE MANUFACTURE OF ORNAMENTALFABRICS Filed May 16. 1933 2 Sheets-Sheet l .mln 3 (5 30 29 /5 l 32 20G. 6 gwiwmboz/ e/Qlfl'8d Zieslez- 5513/ 1 wane/w June 26, 1934. A.TIESLER 1,964,607

DEVICE FOR USE IN THE MANUFACTURE OF ORNAMENTAL FABRICS Filed May 16,.1933 2 Sheets-Sheet 2 33 p5 2a 29 /5 E /7 FIG.|2.

Jwvewkaz/ efllf'red Tiesler 8913 Patented June 26, 1934 DEVICE FOR USEIN THE MANUFACTURE OF ORNAMENTAL FABRICS Alfred Tiesler, Wittenberge,near Potsdam, Germany, assignor to The Singer Manufacturing Company,Elizabeth, N. J., a corporation of New Jersey Application May 16, 1933,Serial No. 671,328 In Germany May 20, 1932 30 Claims.

This invention relates to devices for use in the manufacture ofornamental fabrics, particularly pile fabrics, fringed fabrics and thelike, to be used for instance, as coverings, such as floor coverings,cushion covers, and the like.

It is already known to wind yarn or like material around a flat bar inmanner to form loops enchained along one edge of said bar, whereupon thechain is secured to a base fabric or backing by stitching along saidedge, and the bar is then withdrawn from the loops which are cut to formtufts.

It is also known to wind yarn or like material in loops around a forkedmember or bar, and to I cutting knife and a knife guard, and anauxiliary bar secured to said main bar so as to be removable andwidthwise adjustable relatively to the main bar.

The invention is illustrated in the accompany- I ing drawings in whichFig. 1 is a plan view, Fig.

2 a fragmentary side elevation, and Fig. 3 a section on the line aa ofFig 1, showing a first embodiment; Figs. i-13 show a modificationincorporating two knives having cutting edges at an acute angle to oneanother, Fig. 4 being a plan view, Fig. 5 an inverted plan view, andFig. 6 a fragmentary side elevation. Figs. '7, 7a and 7b are,respectively, plan, end and side views of the knife assembly. Figs. 8and 8a are, respectively, plan and end views of a backing plate elementof the knife assembly. 'Figs. 9 and 9a are, respectively, plan and endviews of one of the knife elements of the knife assembly. Figs. 10 and1011 are, respectively, plan and'end views of another knife element ofthe knife assembly. Fig. 11 is a fragmentary plan view showing the knifeseat on the main bar of the device. Fig. 12 is a side view of the partsshown in Fig. 11, and Figs. 13 and 1301. are, respectively, edge andface views of the adjustable bar-spacing clip. Figs. 1 1 and 15 are planviews showing a further modification, while Figs. 16 and 1'7 are planviews showing yet another modification.

The device illustrated in Figs. 1-3 inclusive comprises a thin flat baror straight-edge 1 of spring metal to the upper face of which a knife 2is removably secured by screws 3, said knife 2 having its cuttingedgeinclined to and extending beyond one of the parallel edges of the bar 1.

Secured to the under face of the bar 1 as by screws or rivets 4 is theshank 5 of a guard element made of thin sheet metal and having a U-shaped guard portion 6 joined to said shank 5, said guard portion 6embracing the cutting edge of the knife 2 and being spaced therefrom toperrnit the passage of yarn between said cutting edge and the guard 6.

Upstanding from the bar 1 near its proximal end is a screw-threaded pin7 engaged by a pinching nut 8 and penetrating a slot 9 in the crankedend 10 of an auxiliary bar 11 adjustable widthwise of the bar 1. Thebars 1, 11 thus constitute the prongs of a fork. The slot 9 is enteredalso by a stop pin 12 upstanding from the. bar 1 adjacent to the pin '7.In Fig. 1 the stitchreceiving gap between the bars 1, 11 is shown asbeing about equal to the width of the auxiliary bar 11, it beingunderstood that the width of the gap between the bars 1, 11 may bevaried by virtue of the pin and slot connection 7, 9 for the purpose ofproducing pile fabrics of different heights of pile.

13 denotes a spacing member adapted to be fitted over the free ends ofthe bars 1, 11, such spacing member being constructed in manner similarto that of the combined guard and spacing member provided in theconstruction described in the specification filed withthe application ofSven Svensson, Ser. No. 666,639; filed Apr. 18, 1933, and being adaptedto be secured in position by means of a milled pinching screw 14.

On the removal of the auxiliary bar 11 the bar 1 with its knife 2 may beemployed in the production of ornamental fabrics by the method describedin the specification filed with the application of Jean GregoriouSakellarides, dated 25th February, 1933, Serial No. 658,552. When theauxiliary bar 11 is in position, the mode of operation of the device maybe similar to that of the construction described in the specificationfiled with the application of Daniel H. Chason dated January 4th, 1933,Serial No. 650,073.

Referring to the modified construction shown in Figs. 4-13 the deviceillustrated consists of a primary bar 15 to which is removably fitted aknife 16 and to the free or distal end of which is pivoted at 1'7 aspacing clip 18' engageable with the free or distal end of an auxiliarybar 19 adjustable widthwise of the primary bar 15 and removabletherefrom. The outwardly directed cutting edge 16 of the knife 16projects beyond and is inclined to the outer edge of the bar 15.Cooperative with the knife 16 is a second knife 20 the inwardly directedcutting edge 20 of which forms in conjunction with the cutting edge 16of the first knife 16 a shear cutter for the yarn loops, said secondknife 20 constituting a guard for the first knife 16. Affording abacking or support for the second knife 20 is a plate 21 presenting aresilient lug 22 engageable with the underside of the bar 15. The knives16, 20 and the backing plate 21 are detachably interconnected by screws23 threaded into the backing plate 21. Depending from the knife 16towards one end thereof is a pin 24 engageable with an aperture 25in thebar 15. Upstanding from the lug 22 is a pip 26 engageable with anaperture 2'7 in the bar 15. The knife 16 is engageable with a seat 28formed in the upper face of the bar 15 and presenting at one end anundercut ledge 29 affording a groove engageable by a beveled edge 30 onthe adjacent end of the knife 16. As will readily be understood, theknife assembly is held in position on its seat 28 by the engagement ofthe pin 24 with the aperture 25, by the engagement of the pip 26 withthe aperture 2'7, and by the engagement of the beveled edge 30 with theundercut ledge 29. The knife assembly is removable from and remountableupon its seat 28 simply by swinging the knife assembly about the axis ofthe pin 24 'to cause the pip 26 to snap out of engagement with or tosnap into engagement with the aperture 2'7 and to cause the beveled edge30 to become disengaged from or to engage the groove presented by theundercut ledge 29.

The auxiliary bar 19 has at its proximal end a cranked portion 31slidable in a transverse guideway 32 presented by a forked member 33attached to the proximal end of the bar 15 and affording a handle orfinger grip 34. A pinching screw 35 is provided for securing the crankedportion 31 of the auxiliary bar 19 in its position of adjustment in theguideway 32.

The spacing clip 18 is of forked form to straddle the distal ends of thebars 15, 19, being formed with registering slots 36 entered by the pivotpin 1'7 and dimensioned to permit bodily movement of the clip so as toprovide for variablespacing of the auxiliary bar 19 from the primary bar15. Pivoted at 37 to the clip 18 is a latch member 38 presentinginterdental notches 39 engageable selectively with the pin 17 todetermine the spacing between the distal ends of the bars 15, 19 whilepermitting free pivotal movement of the clip about the pin 1'7. A smallblade spring 40 located within the auxiliary bar-engaging socket 41 ofthe clip 18 is adapted frictionally to engage the distal end of theauxiliary bar 19 so as normally to hold the clip in operative position.

Indicating lines are marked on the cranked portion 31 of the auxiliarybar 19 representing diiferent predetermined adjustments of the auxiliarybar widthwise of the primary bar, such indicating lines being spacedequidistantly with the interdental notches 39 of the latch member 38.

The further modification shown in Figs. .14 and 15 comprises a primarybar 42, a knife mounted on said bar 42, a spacing member 44 and anauxiliary bar 45 adjustable widthwise of and detachable from the bar 42.

In this construction, as in the construction illustrated in Figs. 413,there is used a double shear-forming knife comprising an upper knife 46,a cooperative lower knife 47, and a backing plate 48. The knives 46, 4'7and the backing plate 48 are secured to one another by screws 49. Theknife assembly is detachably secured to the bar 42 in manner similar tothe construction described with reference to Figs. 4-13, the knife 46being provided with a pin engageable with an aperture 51 in the bar 42and the backing plate 48 being provided with a pip 52 engageable With anaperture 53 in the bar 42. As in the construction illustrated in Figs.4-13, when it is desired to remove the knife assembly from the bar 42,it sufiices to rock the knife assembly about the pivot formed by the pin50, the pip 52 snapping out of the aperture 53 and the beveled edge ofthe knife 46 being disengaged from the undercut ledge on the bar 42,whereby the entire knife assembly can be removed from the bar 42. Thereare then no projecting parts on the bar 42. To attach the knife assemblyagain, first the pin 50 is inserted into the aperture 51 and the knifeassembly is rocked about this pin 50 as a pivot until the pip 52 snapsinto the aperture 53 in the bar 42. As the knife assembly embraces thebar 42 in clamp fashion, secure holding of the knives to the bar isensured.

The auxiliary bar 45 has at its proximal end a bent portion 54 slidablein a guideway 55 presented by a forked member 56 attached to theproximal end of the bar 42 and affording a handle or finger grip 5'7. Aswill be understood, throughout its range of adjustment the bar 45 ismaintained parallel with the bar 42. A pinching screw 58 threaded intothe member 56 is engageable with the bent portion 54 of the bar 45 tolock the bar 45 in its position of adjustment.

To support the distal end of the auxiliary bar 45 there is pivoted at 59to the distal end of the bar 42 the spacing member 44 which can be swunginto alignment with the bar 42 as shown in dotted lines in Fig. 14.Formed in the spacing member 44 is a number of notches 60 engageable bythe tapered distal end of the auxiliary bar 45.

In order to facilitate the exact parallel adjustment of the auxiliarybar 45 there is provided on its lower bent end portion 54 a number ofmarking lines, and correspondingly there is provided on the outer faceof the spacing member 44 a number of marking lines corresponding to theseveral notches 60.

When the spacing member 44 is swung into the position indicated indotted lines and the knife assembly removed, work can also be done informing and stitching unsevered loops.

In the further modified construction shown in Figs. 16 and 1'7 the knifeassembly comprises an upper knife 61, a lower knife 62, and a backingplate 63, as in the constructions shown in Figs. 4-15.

The upper knife 61 is connected with the backing plate 63 by means ofscrews 64, 65. On the knife 61 there is also provided a pin 66engageable with an aperture 6'7 in the main bar 68. On the backing plate63 there is provided a pip 69 engageable with an aperture '70 in the bar68. The knife assembly is detachable from the bar 68 by rocking theknife assembly about the pin 66, as in the constructions according toFigs. 4-15. The knife 62 which is formed with a recess '71 engageable bythe finger nail is formed also with an open ended slot '72 engageablewith a pin '73 upstanding from the backing plate 63. Alongside thecutting edge the knife 62 has an arcuate guide slot 74 concentric withthe pin '73 and engageable with the shank of the screw 65. When thescrew 65, in the position of the parts shown in Fig. 16, is loosenedsomewhat, the knife 62 may be swung about the pin '73 as a pivot wherebyto shift the cutting point in case, for example, the cooperating cuttingedges of the knives have become blunt at the cutting point. The knife 62is secured in its position of adjustment by tightening thescrew 65.Also, the knife 62 may be swung about the pin '73 as a pivot until theguide slot '74 comes out of engagement with the shank of the screw 65whereby the knife 62 can be entirely removed, so that with suitableformation of the knives and backing plate convenient sharpening of thecutting edges of both knives is made possible or the knife 61 alone canbe used for cutting the yarn loops.

denotes a spacing member for spacing the distal end of the main bar 68from the distal end of the auxiliary bar 76, said spacing member '75being mounted for pivotal and bodily movement similar to the spacingmember 18 in the construction illustrated in Figs. 4-13.

I claimz- 1. A device of the class described, comprising a forkedloop-forming member having two prongs separated by a stitch-receivinggap, and a loopcutting knife and knife-guard secured to one of saidprongs.

2. A device of the class described, comprising a forked loop-formingmember having two prongs separated by a stitch-receiving gap, aloop-cutting knife and a knife guard removably fitted to one prong, anda spacing member for spacing the free ends of said prongs.

3. A device of the class described, comprising a forked loop-formingmember having two prongs widthwise adjustable relatively to one anotherto vary the gap between said prongs, a loop-cutting knife removablyfitted to one of said prongs, and a spacing member anchored to said lastmentioned prong for'spacing the free ends of said prongs.

4. A device of the class described, comprising a fiat loop-forming barhaving parallel edges, a knife adjacent to one end of said bar having acutting edge extending beyond and inclined to one of said paralleledges, a guard for said knife, 2. second bar spaced from the other ofsaid parallel edges to afford a stitch-receiving gap between said bars,said second bar having one end removably connected to said firstmentioned bar, and means independent of said guard for spacing the freeends of said bars.

5. A device of the class described, comprising a fiat-loop-forming barhaving parallel edges, a knife adjacent to one end of said bar having acutting edge extending beyond and inclined to one of said paralleledges, a second bar spaced from the other of said parallel edges, saidsecond bar having one end remcvably connected to said first mentionedbar and being widthwise adjustable relatively to said first mentionedbar, and means permanently connected to the free end of said firstmentioned bar for spacing said bars.

6. A device of the class described, comprising a fiat loop-formingmember, and a loop-cutter adjacent to one end of said member, saidloopcutter consisting of a pair of knives removably secured to oneanother and to said loop-forming j member.

7. A device as claimed in claim 6 in which one knife is in pin andaperture engagement with the loop-forming member and the other knife hasa removable connection with the first knife.

8. A device of the class described, comprising a pair of separable bars,connectible with one another in parallelism to constitute a forkedstructure, a loop-cutting knife and knife guard fitted to one of saidbars, and a spacing member for spacing the free ends of said bars.

9. A device of the class described, comprising a forked loop-formingmember having two prongs WidthWise adjustable relatively to one anotherto vary the gap between said prongs, a loop-cutting knife fitted to oneof said prongs, and a spacing member connected for pivotal and bodilymovement with one'of said prongs for spacing the free ends of saidprongs.

10. A device of the class described, comprising fiat loop-forming barhaving parallel edges, a loop-cutting knife adjacent to one end of saidbar presenting a cutting edge extending beyond and inclined to one ofsaid parallel edges, a second bar connected at one end to said firstmentioned bar and widthwise adjustable in parallelism with the other ofsaid parallel edges, and a spacing member having a pin and slotconnection with said first mentioned bar and engageable with the freeend of said second mentioned bar.

11. A device of the class described, comprising a flat loop-forming barhaving parallel edges, a knife adjacent to one end of said barpresenting a cutting edge extend ng beyond and inclined to one of saidparallel edges, a second bar connected at one end to said firstmentioned bar so as to be widthwise adjustable relatively to said firstmentioned bar, and a spacing member connected to the free end of saidfirst mentioned bar and operative to maintain said second bar spacedfrom said first mentioned bar in different positions of adjustment ofsaid second bar.

12. A device of the class described, comprising a flat loop-formingmember presenting a straight edge, and a knife and a knife-guard fittedto said member adjacent to one end, said knife having a cutting edgeextending beyond and inclined to said straight edge, said guard having acutting edge forming an acute angle with the cutting edge of said knife.I

13. A device for the purpose specified, comprising a fiat loop-former,and a loop-cutter presenting shear knives removably secured to oneanother, one of said knives being detachably engageable with said loop-former.

14. A device of the class described, comprising a fiat loop-forming bar,a knife fitted to the upper face of said bar and having a cutting edgeextending beyond one edge of said bar, a backing member engageable withthe under face of said bar, and a second knife interposed between saidfirst 1'30 mentioned knife and said backing member and having a cuttingedge forming an acute angle with the cutting edge of said firstmentioned knife.

15. A device of the class described, comprising 135 a flat loop-formingbar, a handle at one end of said bar presenting a guideway disposedtransversely of said bar, a second bar in parallelism with said firstmentioned bar and having a cranked end adjustable in said guideway, anda knife fitted to said first mentioned bar adjacent to its opposite end.

16. A device of the class described, comprising a loop-forming bar, asecond bar parallel to said first mentioned bar and Widthwise adjustablerelatively to said first mentioned bar, a member for spacing the freeends of said bars, said spacing member having a pin-and-slot connectionwith said first mentioned bar, and a latch mem- 150 ber engageable withthe pin for locking said bars in their position of relative adjustment.

17. A device of the class described, comprising a loop-forming barhaving parallel edges, a knife fitted to said bar and having a cuttingedge extending beyond one of said parallel edges, a second bar spacedfrom the other of said parallel edges to afford a stitch-receiving gapbetween said bars, said second bar having one end adjustably connectedto said first mentioned bar, a clip pivotally connected to said firstbar and engageable with the free end of said second bar, said clipshiftable on its pivot to accommodate variation in the spacing of saidbars.

18. A device of the class described comprising a loop-forming bar havingparallel edges, a knife fitted to said bar presenting a cutting edgeextending beyond and inclined to one of said parallel edges, a secondbar spaced from the other of said parallel edges to afford astitch-receiving gap between said bars, said second bar connected atoneend to said first mentioned bar so as to be Widthwise adjustablerelatively to said first mentioned bar, a pivot pin at one end of saidfirst mentioned bar, a clip having a slot penetrated by said pivot pin,said clip engageable with the free end of said second bar, and a notchedlatch member pivoted to said clip and engageable with said pivot pin.

19. A device for the purpose described, comprising a loop-former, and aloop-cutting knife and a knife guard removable as a unit from saidloop-former.

20. A device for the purpose specified, comprising a fiat loop-formingbar formed with a pair of apertures, a loop-cutter presenting shearknives, one of said knives provided with a pin engageable with one ofsaid apertures, and a backing member for the other knife, said backingmember having means engageable with the other of said apertures.

21. A device for the purpose specified, comprising a fiat loop-formerand a loop-cutter presenting shear knives fitted to said loop-former,said knives being relatively adjustable.

22. A device for the purpose specified, comprising a fiat loop-formingbar and a cutterpresenting shear knives fitted to said loop-former, oneof said knives being angularly adjustable relatively to the other knifeand removable therefrom.

23. A device for the purpose specified comprising a loop-former, and aloop-cutting knife removably attached to said loop-former, said knifehaving a pin and aperture and beveled edge and groove connection withsaid loop-former.

24. A hand tool for the purpose specified, comprising a flat loop-formeradapted to be held in the hand of an operator to receive a winding ofyarn or the like thereon, and a loop-cutter presenting shear knivesfitted to said loop-former.

25. A hand tool for the purpose specified, comprising a fiat loop-formeradapted to be held in the hand of an operator to receive a winding ofyarn or the like thereon, and a loop-cutter presenting shear knivesremovably fitted to said loop-former.

26. A hand tool for the purpose specified, comprising a fiat loop-formeradapted to be held in the hand of an operator to receive a winding ofyarn or the like thereon, and a loop-cutter consisting of superposedknives fitted to said loopformer.

27. A hand tool of the class described, comprising a fiat loop-formingmember adapted to be held in the hand of an operator to receive awinding of yarn or the like thereon, a loop-cutting knife having anoutwardly directed edge adjacent to one end of said member, and acooperative loop-cutting knife having an inwardly directed edge andconstituting a guard for said first mentioned knife.

28. A hand tool for the purpose specified, comprising a flat loop-formeradapted to be held in the hand of an operator to receive a winding ofyarn or the like thereon, and a loop-cutter presenting separable shearknives fitted to said former.

29. A device of the class described, comprising a forked loop-formingmember having two prongs separated by a stitch-receiving gap, a knife onone of said prongs, and a spacing member detachably connecting the freeends of said prongs together beyond said knife.

30. A device of the class described, comprising a forked loop-formingmember having two prongs separated by a stitch-receiving gap, a knife onone of said prongs having a cutting edge directed away from the otherprong, and a spacing member detachably connecting together the free endsof said prongs.

ALFRED TIESLER.

